Measurement and Instrumentation A meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be 0.70 A. 0.50 A. 0.67 A. 0.25 A. 0.70 A. 0.50 A. 0.67 A. 0.25 A. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The difference between the measured value and the true value is called probable error gross error relative error absolute error probable error gross error relative error absolute error ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The effect of stray magnetic fields on the actuating torque of a portable instrument is maximum when the operating field of the instrument and stray fields are inclined at 30o. parallel. perpendicular. inclined at 60o. inclined at 30o. parallel. perpendicular. inclined at 60o. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The difference between the indicated value and the true value of a quantity is Absolute error Gross error Relative error Dynamic error Absolute error Gross error Relative error Dynamic error ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The meter constant of a single phase 240 V induction watthour meter is 400 revolutions per KWh. The speed of the meter disc for a current of 10 Amperes of 0.8 p.f lagging will be 12.8 rpm. 16.02 rpm. 18.2 rpm. 21.1 rpm. 12.8 rpm. 16.02 rpm. 18.2 rpm. 21.1 rpm. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The inductance of a certain moving iron ammeter is expressed as L = 2+5θ-θ2 µH. The control spring torque is 2 × 10-6 Nm/radian. Find the deflection in radians for a current of 2A. 1 5 4 2 1 5 4 2 ANSWER DOWNLOAD EXAMIANS APP
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